Patent Grant
D320548
| Number | Name | Date | Kind |
|---|---|---|---|
| 229670 | Carrick | Jul 1880 | |
| 1056576 | Olson | Mar 1913 | |
| 1468110 | Howe | Sep 1923 | |
| 1929361 | Liljebladh | Oct 1933 | |
| 2212156 | Erdley | Aug 1940 | |
| 2295051 | Roth | Sep 1942 | |
| 2452406 | Volkery et al. | Oct 1948 | |
| 2469542 | Becker | May 1949 | |
| 2565793 | Weismantel | Aug 1951 | |
| 2651026 | Roth | Sep 1953 | |
| 2686029 | Raymond | Aug 1954 | |
| 2769895 | Boord | Nov 1956 | |
| 2791623 | Lock et al. | May 1957 | |
| 2858522 | Wengen et al. | Oct 1958 | |
| 2866657 | Duffy | Dec 1958 | |
| 3146982 | Budnick | Sep 1964 | |
| 3161721 | Torr | Dec 1964 | |
| 3349927 | Blatt | Oct 1967 | |
| 3568959 | Blatt | Mar 1971 | |
| 3613904 | Blatt | Oct 1971 | |
| 3677584 | Short | Jul 1972 | |
| 3712415 | Blatt | Jan 1973 | |
| 3963855 | Hawkins et al. | Jun 1976 | |
| 4275872 | Mullis | Jun 1951 | |
| 4355922 | Sato | Oct 1982 | |
| 4443128 | Yamamoto et al. | Apr 1984 | |
| 4453755 | Blatt | Jun 1984 | |
| 4479661 | Weigl | Oct 1984 | |
| 4480497 | Locher | Nov 1984 | |
| 4495834 | Bauer et al. | Jan 1985 | |
| 4708297 | Boers | Nov 1987 |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 271083 | Nov 1988 |
